Merge branch 'act_ct-Software-offload-of-conntrack_in'

Paul Blakey says:

====================
act_ct: Software offload of conntrack_in

This series adds software offload of connections with an established
ct state using the NF flow table offload infrastructure, so
once such flows are offloaded, they will not pass through conntrack
again, and instead act_ct will restore the conntrack info metadata
on the skb to the state it had on the offload event - established.

Act_ct maintains an FT instance per ct zone. Flow table entries
are created, per ct connection, when connections enter an established
state and deleted otherwise. Once an entry is created, the FT assumes
ownership of the entry, and manages it's aging.

On the datapath, first lookup the skb in the zone's FT before going
into conntrack, and if a matching flow is found, restore the conntrack
info metadata on the skb, and skip calling conntrack.

Note that this patchset is part of the connection tracking offload feature.
Hardware offload of connections with an established ct state series will follow
this one.

Changelog:
   v1->v2:
     Removed now unused netfilter patches
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

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